// Copyright (C) 2013 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
description: >
    `yield` is a valid expression within generator function bodies.
es6id: 14.4
features: [generators]
---*/

function Test() {
    var iter, result;
    function* g1() { (yield) }
    function* g2() { [yield] }
    function* g3() { {yield} }
    function* g4() { yield, yield; }
    function* g5() { (yield) ? yield : yield; }

    iter = g1();
    result = iter.next();
    assert.sameValue(
      result.value, undefined, 'Within grouping operator: result `value`'
    );
    assert.sameValue(
      result.done, false, 'Within grouping operator: result `done` flag'
    );
    result = iter.next();
    assert.sameValue(
      result.value, undefined, 'Following grouping operator: result `value`'
    );
    assert.sameValue(
      result.done, true, 'Following grouping operator: result `done` flag'
    );

    iter = g2();
    result = iter.next();
    assert.sameValue(
      result.value, undefined, 'Within array literal: result `value`'
    );
    assert.sameValue(
      result.done, false, 'Within array literal: result `done` flag'
    );
    result = iter.next();
    assert.sameValue(
      result.value, undefined, 'Following array literal: result `value`'
    );
    assert.sameValue(
      result.done, true, 'Following array literal: result `done` flag'
    );

    iter = g3();
    result = iter.next();
    assert.sameValue(
      result.value, undefined, 'Within object literal: result `value`'
    );
    assert.sameValue(
      result.done, false, 'Within object literal: result `done` flag'
    );
    result = iter.next();
    assert.sameValue(
      result.value, undefined, 'Following object literal: result `value`'
    );
    assert.sameValue(
      result.done, true, 'Following object literal: result `done` flag'
    );

    iter = g4();
    result = iter.next();
    assert.sameValue(
      result.value,
      undefined,
      'First expression in comma expression: result `value`'
    );
    assert.sameValue(
      result.done,
      false,
      'First expression in comma expression: result `done` flag'
    );
    result = iter.next();
    assert.sameValue(
      result.value,
      undefined,
      'Second expression in comma expression: result `value`'
    );
    assert.sameValue(
      result.done,
      false,
      'Second expression in comma expression: result `done` flag'
    );
    result = iter.next();
    assert.sameValue(
      result.value, undefined, 'Following comma expression: result `value`'
    );
    assert.sameValue(
      result.done, true, 'Following comma expression: result `done` flag'
    );

    iter = g5();
    result = iter.next();
    assert.sameValue(
      result.value,
      undefined,
      'Conditional expression in conditional operator: result `value`'
    );
    assert.sameValue(
      result.done,
      false,
      'Conditional expression in conditional operator: result `done` flag'
    );
    result = iter.next();
    assert.sameValue(
      result.value,
      undefined,
      'Branch in conditional operator: result `value`'
    );
    assert.sameValue(
      result.done,
      false,
      'Branch in conditional operator: result `done` flag'
    );
    result = iter.next();
    assert.sameValue(
      result.value, undefined, 'Following conditional operator: result `value`'
    );
    assert.sameValue(
      result.done, true, 'Following conditional operator: result `done` flag'
    );
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
